Illumination systems utilizing light emitting diodes and light recycling to enhance output radiance
US6960872B2 · kind B2 · utility
104Cited by
7References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Jun 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/856
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination system has a light source that is at least partially enclosed within a light-recycling envelope. The light source is a light-emitting diode that emits light, and a fraction of that light will exit the light-recycling envelope through an aperture. The light-recycling envelope recycles part of the light emitted by the light source back to the light source in order to enhance the output radiance of the light exiting the illumination system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.